Android Jelly Bean? Android Ice Cream Sandwich? Android Honeycomb (ok that's not necessarily junk food). Android Eclair, Donut and Cupcake? It's been "junk food" since 1.5.
True, though so far it was less obvious, as in they're non "processed" snacks and deserts, and not brand names (as far as I can tell, maybe for North Americans it is more obvious?)
Android releases are named after some sweet, and going alphabetically. They just reached letter K. I'm not sure I can think of some other sweet starting with K?
Depends on your definition of junk food. Chocolate covered biscuits were considered a delicacy and a snack before it was called junk.
afaic chocolate covered biscuits fall quite neatly into most any definition of junk food...